1971

5.5

2005

6.2

1964

5.7

2008

6.2

1996

6.8

2008

5.1

2005

5.2

2001

5.4

1952

6.7

2017

6.1

2000

5.7

2004

6.2

1998

5.5

1992

6.6

1981

7.1

1975

4.9

2022

3.0

2003

5.8

1984

6.1

2018

5.2